Coil-winding device



Sept. 25, 1928. 1,685,597

' A. W. BJORKMAN COIL WINDING DEVICE Filed NOV. 29, 1926 2 Sheets-Sheet 1 14.1 www... INVENTOR BY rn/IWW ATTORNEY Sept. 25, 1928.

A. W. BJORKMAN COIL wINDNG DEVICE Filed Nov. 29, 1926 2 Sheets-Sheet 2 ATTORMY `theline of Figure 1;

Patented Sept'. 25, 1928.

` UNITED` STATES' PATENT; OFFICE.

w; moitinnen, or BmoxLYN, NEW YORK, AssIcfNoR4 'ro `ons" `ELEvA'roR l' i' Commun?,` 0F NEW Yonx, N. Y.,A 'CORPORATION or NEW JERSEY.

co'IL- WINDING DEVICE.

. t Application led November 29; 1926. Serial No..1 51,494.

This invention relates to coil-Winding devices and particularly to devices for winding coils to be used for armatures of dynamo-electric machines. A` feature. ofthe invention is to provide a `device of the above character that ot' simple construction and easily operated.

Another feature of the invention resides inthe provisionof a device of the above character that requires but little manual adjustmentuand reduces to ay minimum 'the time required to Wind a coil.

A third `fea-ture of the invention is to provide.ajcoil-Winding device `from which the coil may be quickly removed Without the possibility of injury resulting` to the coil ortoitsyinsnlation.' y f l @ther features and advantages willbecome apparent from the ,-speciticat'ion, taken in connection. with the `accompanying drawings wherein the invention isA embodied in concrete form.; l

1n the drawings .Figure '1 isa View` in elevation with parts broken awa-y of the coil Winding device;

lFigure 2-i`s a sectional view 1 taken `along l VFigure 3 is a view in part section taken along theline-#Bof Figure l; K y .i y Figure 4 is a` viewfin part section taken along the line 4-4 of Figure 3; ,-1

F'gure oise-sectional `View taken along the line 5-5 of Figure 1;

Figure 6 is a View` in part section taken along the line 6--6 of Figure 1;

. Figure' is a1 view in part section taken alongthe line 7.-7 of Figure-i 1; v

Figure 8` is aside `View of Figure 1 with parts broken away;` i t l i l Ffgure `9` isaschematic illustration ot the winding device in operation; t

Figurel() is a View similar to Figure 9 and illust-ratesthe employment of a different ty e of Wire clamp; Y lFigurell is a view in part section taken alongthe line 11-11 of Figure 10; and

Figure 12 is a'sectional view taken along the line 12.-.12 of Figure 11. Y

yReference may first be had to` Figures 1 andS illustrating the device as a Whole, Vwherein, according to the preferredarrangement a` driving means or motor y1 having a.

driving shaft 2 is secured by screwsv 3 to va base plate 4. Asprocket Wheel 5 is keyed on theA driving shaft 2 andl 4is retained thereon by a set-screw 6. A sprocket chain 7 extends around thesprocket Wheel 5 and around asprocket Wheel 8 having a hub 9 rotatably mounted on -a Wormv Shaft 10. rl'he hub 9 of sprocket wheel 8 has a lbushing 11 surrounding theshaft 10.1 A collar 12 is secured on the Worm shaft adjacent one side of the hub 9. [A Vstationary bearing bracket 2O is positioned adjacent the other side of the hub 9.' Collar 12 and bracket 20 prevent the sprocket Wheel 8 from sliding along` theworin shaft 10. Bearing bracket 2!) is secured to a gear housing' 22 by V'screws '1`hisbearing brackethas a bushing 21 surroinnling and supporting theishaft 10.

The worin shaft 1() extends into the gear housing 22. (tear housing 22 has two removable bearings and 24` that support the Worin shaft. i Bearing 23 is secured to the 'gear housing by screws26. Thisbearing is providedwwith a smiling-box' 27 having a packing-nut 28 for the purpose` of retaining lubricant 'Within the gear housing. Beariiig 24 is formed `with athrust bearing rccessO.` A ball thrust bearing 31 is positioned Within the recess 30 and is mounted on a reduced end portion of the Worm shaft.. A `retaining nut 29 is threaded` on the' end of shaft 1 0 adjacent the bearing 31. Aicap covers the outer end of bearing 24. Cap 32 and bearing 24V are secured to the gear housing 22 by screws 33 extending through these inenlleers and threaded into the gear housing. The gear housing/22m mounted :on a supporting frame 34 land is secured `to this frame" by screws 35. Frame34`consists of two pedestals SGaud rigidly connected b v cross-barsBSand 4() bolted to the ped` est-als. A Bolts 41 secure the base plate 4 to the frame 34. l

The sprocket Wheel 8 is formed at its periphery vwith a laterally extending flange 14. T his flangehas its inner surface tapered and constitutes a Vjaw of a cone 'clutchll The 4otherjaw 16 of cone clutch 15 has its hub 17 mounted on the Worm shaft 10. A key 18 securedfto shaft- 10 and extends through a keyway in the hub 17 of jaw 16. Hub 1T may slide along the Worm shaft 1 0 but lis preventedby key 18 from turning With respect to this Shaft. The 'periphery of hub 17 is provided With an annular groove 44.

A clutchlever 45 having the form of a bell crank is pivoted on a pin 46V extending through lthe `bracket20. The pin 46 is prollO with an aperture v67.

Nfl

port.

vided with a head at one end and a nut 47 lon the other end for retaining the pin in the bracket 20. Bracket is recessed at 48 to accommodate the clutch lever 45. The upper portion of clutch lever-.45 extends around one side of theV hub 17 of the jaw 16 and carries a bolt 50 that extends through an aperture in the clutch lever. A roller 51 (see Figure 2) is rotatably mounted on' L the bolt 50 and is'positioned within the groove 44 of the hub 17. A roller support 53 is secured' by bolts 56 to the upper portion of the clutch lever 45. Roller support 53 extends around the otherside ofthe hub 17 ofthe jaw 16 and carries a bolt 54 that extends through an `aperture in the roller sup- A roller 55 is rotatably mounted on the bolt 54and is positioned within groove 44 0fv the hub 17.

Referring again to Figures 1 and 8, one end of a vertically arranged link 59 is pivotally connected to lever 45 by a bolt 57. The other end Oflink59 is pivotally connected by a bolt 58 t0 a lever 60. Lever 60 is keyed to a rock shaft 61 that rhas bearings in the pedestals 36 and'37 of the frame34. yCollars 62 are secured to the rook shaftk 61 by set screws 63 and are positioned adjacent the frame 34 for the purpose of retaining this shaft within its bearings in' theV frame 34. The rock shaft extends outwardly from each side of the frame 34 and is supported in two pedestals. Only one of these pedestals is illustrated and is designated 64. One end of this shaft is keyedrt'o a foot lever 65l and the other end is'likewise keyed toa foot lever7 not shown.

Clutch' lever`45 is provided at one end A tension spring 68 has oneV end extending through the aperture 67 and its other end wrapped around a bolt 69. vBoltv 69 extends through apertures in Vthe pedestals`36 and 37 of the frame 34.

The' Worm 70 of the worm shaft 10 meshes with a Vworm wheel 71.A The .hub 79 of Wheel 71 `is keyed to the'central enlarged portion 72' ofthe worm wheel shaft 73. Shaft 73 is supported in bearing bushings75 and r76 mounted in the gear housing v22. Shaft 73 has reduced end portions 77 and 78 extending outwardly from the gear housing. End portion 77 is threaded for a portion of its lengthwith a right hand thread. End portion 78 is threaded fora portion of its length witha left hand thread. A winding bar holder 80 is threaded upon theend por tion 78.y Winding bar holder 80 is formed with a. circular aperture 81 extending at `74 for retaining this bar in the bar holder.

A key 84 is secured by screws 85`tothe`winding bar 74 and extends* the full length of and 90.

.The vbaser 94 (seeFigures 3 and 4) of a wire clamp 91 is secured to the face 87 by screws extending through apertures in the clamp-base 94 and threaded into the recesses 88 and 90. Diagonally arranged'dowels '92 and 93 are lixed in apertures in the clamp base 94 and extend into recesses provided in the bar holder 80. lThe'body port-ion 95 of the wire clamp 91 (see Figure is formed with an aperture 96 of rectangular cross-v section. AThis `aperture extends at right angles to the clamp base 94 and acts as a guide for a clamp bar 97. Clamp bar 97 carries a guide pin 98. Guide pin 98'is secured in a recess in one -endof the clamp tapered yand engages fthe inclined face 106 Y of a wedge 107 that extends through the `aperture 104. The bodyr portion of the loo wire clamp 91 has an aperture 108 extending at right angles to theaperture The wedge 107 is positioned within theaperture 108 and 4rests against thewalls'of this aperture. The narrow endt Vof the wedge 107 carries a'guide pin 110 similar'to the guide los pin 98. Guide pin 1'10 extendsv through a i.

coil compression vspring 111 and through' an aperture 112 in a spring retaining plate 113. Spring retaining plate 113 is secured on the body portion 95 of wirev clamp 91 by dowels 114 and screWs'115. Y on the body portion 95 by dowels 117 .and

screws 118. A clampgscrew 12O`is`threadedv through an aperture in the plate 116 and engages the wedge 107.

A pivotal stud 119 has a reducedV end 121 that is threaded through the Vclamp bar '97. Stud 119 has a. jawmember 122 pivoted thereon. vJaw member 122 has a gripping portion 124 t'l'iatext'ends from aV hub portion 123. A part of hub .portion 123 is positioned within a cylindrical recess provided Vinfthe 'clamp bar. The gripping portion 124 has a curved lserrated gripping face 125. n T hecurve ofthe gripping face .125 is eccentric 'with resp-ect to the 'pivotal .stud 119.. i i Aleaf A plate 116 is secured u spring 126 is secured to .an anchor pinv 127 extending from the clamp bar 97. ne side Lasagne? of this spring bears against apin128` extending from the clamp bar and the otherside of this` spring bears'againsta side 13() oii the g, rrip]iing` g1 portionV 1240i the ljaw member. The opposite sidefll of the gripping portion 124 bears against astop shoulder 132 formed onthe` clamp'bar 97. f

A jaw member 133 isarrangedvt-ocooper member andthreaded into the body/portion ofthe clamp. f `findingY `bar U74 `and key "84 extend throughlan aperture 137 in alwi'nding block ho1der136. lVindingblockholder 136 may slide alongtl'ie Winding bar 74 butis prevented by `key 84 from turning'with respect to this bar'. As illustrated in Figures?) and 6 Winding block holder 136 formed lwith a threaded recess `138 extending at `right angles tothe 'aperture' 137. 'A cylindrical Winding .block .140 isl threaded intoy the recessk1'38. The Windingblock may be `adjusted Within `the recessv138` by turning this block with respect to theblock holder 136.` The Winding block `is secured inv its adjusted position within the block holder.136'by lmeansfotV a set screw 142. `'l`hissetsscrew `engages one or the otheriof twofdiametricallyarranged slots143`and 144 provided in thewinding block and yprevents the turning of the Winding 'block within the holder 136. The winding block* has a tongue 145 extending outv vardlyftheref-i-om.y This tongue comprises a winding portion146 and aiedu'ced end portion. I'TheAv reduced end portionris cut awayinidwayofits length so as2to"i"orma central cylindrical part 147" j oining two non,- circular end parts 148 and 150. V

55A guide washer 151 has an aperture 152 thaty is n'iadeto lit` the reducedend portion of the tongue 145. This Washer posi# tioned on* end part 148 of the reduced end portion and-has a cylindrical recess 156. The disk shaped body1'54 ot a lock nut 155 is;postionedfwithiii thefrecess 156. This body154of thel 'lock nut '1 isretained "niith'i in recess 156 by two seiniiannularretaining plates 157 vand Y1.58. Retaining plates 157 and 158f'are secured `by"screws1.66 to the Aguido Wasllerand` entend over the 'body '154 of 'the locknutjt The body .1:5461- thelock nut has a centrallyT positioned aperture 161 that `is made to fit the reducedv end'portion of theitongue 145..Body 154 or""l ockv lnut has an annular Yflange 162 extendingout- Wardly therefrom. This fiange h'asan enlarged knurledportionl 163 for lthe purpose ofy permitting rmanual. adjustment of the lock nut. on thewreduced end portion of the tongue 145. f

. vThe guide Washer y151. and the-loch4 nutl y form a lunit 164 that may-be placed on or re'- moved frointhe reduced end portionof the tongueL145. vTo place this `unitV 164 on the reduced endy portion 'of the tonguev the apertures 161 and-152 in the lock nut and guide Washerl respectively are made to alignv with one anothcri. This is accomplished byturning the body 154 of the lock nut Within the recess 1.56ct the guide Washer. The unit is thon'slipped` over thereduced end portion of the tongueso that ythe guide washer rests on end part 148 andthe" lock nut body 154 is `opposite the cylindrical par-t 147. The

lock nut is:` then turned causingthe disk shaped body-154 to turn about the cylindrical part'f147.`v The Wall ofthe body 154 adjacent the aperture 161 enters the cut away partw ot' Vthe reduced endy portion of` the tongue-145 thuslockingthennit 164 on vthe Winding block" 140. To remove the unit fronitheY Winding block the lock nut is turned so that its aperture 161 is `again in alignment with aperture .152 whereupon the nutymay be Yslipped off Iof the reduced end portion of the tongue 145. i

- The winding block holder136 is formed with a threaded recess 165i An eye-bolt 166 is threadediinto the recess 165. The eye-bolt l66extends through a compression spring 169 and through an aperture 167 ina clamp 168. `The compression spring169xbears at onelv end against the lWinding `block holder 136 and-at the other end'againstv the clamp 168.1 `Clamp 168 `haslegs 176 and 177fthat extend around the winding bar 74. A screw 178 ,extending throughan aperture in leg 1:76 and lthreaded.intoleg '177 causes these legsto bind uponfthe bar 7 4,` thus securing the-*clamp onthis bar. A releasing lever 172 :has a bift'urcatedl end portion 171. A pivotal pin 170 iscarred by the bifurcated end. portion 171. Pink170` extends through the eye o1-aperture 175 in the head ofeyeboltz166.r"The bifurcated end'portion 171 has the form of a cani and is arranged to coact with the clamp 168. The caInA surface off the-biiurcatedl end `portion 171 is flat at thee-end 173 andA side 174, While this surface is curvedbetween `these 1 parts. AEnd 173- is spaced further `from the pin` 170 andeye 175 than is.` side 174. The releasing lever 172 may be'turned about the head ofthe eyebolt 166l causing the cam surface*` ofthe end portion 171 toislide over the adjacent surface othe clamp 168.' Compression spring "-169 urges Winding block holder 136 away from theclamp168 and causes the cam surL face of 'the end Aportion 171 to bear against the clamp n168. ".When the end 173Jengages `the clamp 168 thefwinding block holder is nearer 2this. clamp` than when the side 174 'engagesthisclamp' .i` n

f Winding bar 74 and key 84 extend through an aperture 179 in a Winding block holder 189. finding block holder 189 is similar tow-inding block holder 136 with the excep- Sfr lll() vtin that holder, ,189 lis Hired on' .the Winding bzh" Whereas-holder l36'n`iziy slide. alolfigv this bar. Holder 1,89, is split M1180 forming clampinglegs 1-81V andl 182. 'Y A screiv'183ex# tendingl through an aperture inV leg 181 and threaded" intofleg 182.cses` these-legs to ing? block holder on* this bary `Holder 189 carries 'awindingibloclf 184: (see Figure 7 )1 of` the same constructie nf asv Winding bjlbk 140. The Winding.-v portion* off the tongue 187 of this xvin'ding' block is designated 185.

A removable? unit 186; off the lsame construe#V Wound is led from" the reel 19,0`r throuighqa tensioning appartns'i191- to' the'Winding'device-.1v The 'tensioni'gapparatns' 191 gripsthe xvii-e Within force: suiicient to' cus'e the proper tensionf tof be appliedEv t' thewire as`j it is wound into" a; coil by the Winding? device'. To crityontthe winding operation .the operator' ledsgtheivire .188 overthe Winding portior'i .185;of`tjl1e yWindingblock 1,84? carried byfthholder 189. `He j placesthe ensd' of the wire 188 ori` the? cle1np.bzir",.97 betweenthe K members bezinsfcient toledmitf the' inserl turnedisonthat thisl screw moves out'wrdly of 'the' b'ofly prtioIlQo the "irec'lgrhpund' divayf from `the wedge 107. Asthe: clamp screvv120 VstirtsWto. nibve outwardlyfthe coni*- pre'ssi'on springfl 11 causes'v the vivf'edg'e 107Ev to moveelong with the scre'fvvV 1205.11 th Wedgel 107:1c01i`nences to `.movel Valong f with thcf Screw' 120. .th'ev compression spring v100.

actingonthe'clamp/'br 97,' ca'uses'the tapered: 'side-105 offthisbar to'sli'deialongthe inclined face G of the, Wedgew107.-As sidev 105 slides Ialongthe face 106`the1clamp bar moves Vo ut-vvedly,"causing the j a'vvl member 122t move away from1 the jaw member' 133756 1 that the Wire my be inserted."

vmembers' 122end133f the clamp screw 1-20 isturned in the reverse direction to that describedV above,` causing-.the Wedge 107 to compress`"the` spring 11111' andto move the clampbar inwardly: against thepressre"dfl l the spring, 100. This inward!movement` of the clamp bar causes the' jaw"membersj122 and 133"to securely-*grip thev Wirebetiveen tllmq' I j Y .placed nenggementfvvith" the `clamp '168 and With thewvire ,inserted betvveenthe the wire is; then ready to be `vvf'ound; y

Windthe ,Wire the operator presses down on the iootl'ever 65 causingtheturningf of rock Y shaft 61,. As roel(Shaft` 61 turnsfitswings leye'r `60 ca singlink 59 tornove.v upwardly. The ii'pivard .movement of link 5-9 is trans'- mitted by .bolt 57' to the clutch"lever/45v by, over-comingl the.. tension" of Spring 68 and c'ausesthis; lever 'to turnabont its pivotal pin 4;(3; Asthe clutchV lever commences-t0 turn, the rollers 51 and155 carried' by this lever engage the side ofgroove in the hub 17 ofthe clutch jew V1" (ir. `-Con-tiniied movement of the cliitch lever causes rollers 531" and to move the clujtclijawl into enggei'nent with' the tapered surface of the flange 14 formed integral Wthfsprobket wheel" 8.

The'motionof the motor' lis novv trmsmit-V y' ted through sprocket Vv vheel 5, s rocketchain 7 sprocket-Wheel 8, clutchl, shaft, 10,- wojrm wheel. 71,y and ,Worm wheel slmft ,73 v to vthe' :Winding b'iir holder 80, Vcans"- ingtlhe Windingber. h'oldeif,to turn gthe Wind'-l ing'- bar 74 in a" rclockwisel in Eigures lend 9.

As the winding bar `tstirts topturn and the Itensioi'i in` thelw'ire" 188` increases owing direction asviwed.

tothe gripping action of the tensioning ap? parat-us 191, tli'erezmaylbe a tendency forthev Wire to slip out from,betvsen the jaw members 122'a-n`d 138. Shbuld the Wire start to slipe as'. a result of this tendency, lits .motion is ai-'esterlby the action ofthe gripping face 125" of the jaiv-f member 122..y Since th con'- tour ot tli-is'feceis eccentric to f tht, of the pivotal stud n119`abo1`i't Whichit tf1'1rns`,jany slipping movement of the' wire ca'ses the jaw member 122 to'turn-'aboutthe pivotal stud 1 19in-zi4 direction to canse :ilessening of the distance' between the vgripping faces of the jaw members 122 vz1ntl133. The W'ireis thus-securely gripped by the .action of the jew members and is prevented from? slipping. y, y As the Winding bar, continuestoturn, the movement of the' Winding'block 184Ica'uses the Wire` tobe bent ,nrond'the Winding portiori`185g0f this block.y lContinued;'movement Intl ofthe Winding` bar causesthe Wire to be bent y* eroundythe Winding portion 14d-olf the wind# ingfblock 140 as illustrated in Figure 9.V

Successive revolutions ofthe winding bar i* causes the Wirefto be wrapped inf` successive layers upon the. winding'f portions 18,5,. an'd 146. The vvindingglglV block"holders and the gnide,iveshei'sgujde thfef Wire. SQ that sic'cessive llayers are `superiinpos'ed uponth@ P1.-e cdieelayerS-f ershes benforned', thepoperiition: of the winding.' device is stopped". by releasing the fot'lever '65: Upon'the 4release-fof this lever," the tension sprmg 68 causes the cllit'ch' lever thedirection to effect tlier disiigiigement'of When e, coil Ofnth desirednnmber oth-1y;

the clampbar in a direction parallel to the pivotal axis of the jaw member 122.` This movement of thewire is notresisted kby the f serrated faces vof thev jaw members since it takes place ina direction that is parallel to the serrations and not across them.`

r fBy removing thennits 164 and 186 comprising `the guide washers and lock nuts from theirwinding blocks in the manner already described, the coil maybe removed from the winding device. Owing to the tension exerteduponrt-he wire during the winding operation, the completed coil kgrips the winding portions 185 and 146 with considerableI force. 9 To removefthe coil without first relieving/it of this' tension'would result in injury Itto-fthe coil. The purpose of the releasing lever 172 is lto `relieve the tension inY vthecoil and thereby'eliminate the gripping of ,the `winding portions by the coil. "i By `turning this lever so that the sidef174 en` gages the clamp168l thespring 169 causes the `winding block holder 156 to move away from the clampY 168 and in the directionof thevvindingn blockholder 189. kThe winding portion-146 ,moves along with holder 13G thus shortening the distance between the windingportions 185-and `1146.v The-"coil may now be :removed from the winding portions. Inthe event that two: winding'ba'rs are carried bytlieworm wheel shaft,the windingdevice Ina-y be ,used to wind two coils sii'nultaneously.- l Y n 'A different type'of wire clamp may be usedqin lieuo `wire -clamp 91. Figures 10, 11 and 12 illustrate the use of such ya. wire clamp. In these figures a wire: clamp 192 is mounted on the, windingbar. Vire clamp 192=co1nprisesfa bracket193 having legs 194 and-195 extending around the bal' 74. A`

cess in a jaw 204. 'The reduced end portion 203 of theclamp screw isformedwith an annular groove 206. `A' pin 207* extends through 'an aperture. in thevjaw` 204 and into vthe grooveV 206, thereby retaining Vthe jaw 204onthee1amp serew'202.

Jaw 204 is formed with an inclined guideway` 208 of v`T `cross-section. A wedge shaped jaw member 210 of T cross-section is positioned withinthe guidcway 208. guide pin 211 has one end xed within a recess in the jaw member 210 and extends through a coil compression spring 212. The spring 212 bears atone end against the jaw member/210 and at the other end against' a bracket 213 carried bythe jaw 204. The bracket 213 has an 'aperture 214 in axial alignment withthe pin 211 in orderto permit this pin to extend through the bracket 213. vrlhe spring 212 urges the jaw member 210 against a stop plate 215 secured by screws216 to the jaw 204. A stop plate 222 is secured by screws 223 to the body portion 1.97 and extends in the path of jaw member 210.

The gripping face 217 of the jaw member 210 is serrated and is arranged to cooperate `with the serrated gripping face 218 of a jaw member 220. Jaw member 220 is secured by screws221 to the body portion 197 of the `wire clamp.

In operation the` end ofthe Wire 224 tobe wound is led from reel 225. through tensioning apparat-us 226 Vto the wire clamp 192T Theendof the wireis inserted be-` tween the jaw members 210 and 220 andthe clamp screw 202 is adjusted so to cause the gripping faces of these members to grip the wire, between them.

Should the Wire commence to 'slip as the coil 4is wound,lthe` jaw member 210 moves with the wire and at the same time slides along the inclined guideway 208.v This movement of the jaw member 210 causes its gripping i'ace 217 to move inthe direction ofthe gripping face 218 until the clamping action of these gripping faces upon the wire causes the slipping of the wire to cease.

lVhen the coil has been wound it may be withdrawn from the winding blocks after the removal ot'` the guide washers and the operation ofthe releasing lever as above described,`

It is to be noted that, byradjiilsting' the winding blocks within the winding block holders, the winding device may be used tor wires of'va-rious sizes. Also wires having crc-sssections of various shapes, such as round, vsquare or rectangular may be wound.

It further noted that'the coils as they come from the Winding device are flat with their ksides parallel and having a number of turns as desired. It willV be understood that these coils are then properly cut and ys )read to the forni in which they are-to b use( Owing to the automatic adjust-ment of the jaw members of the wire clamps to prevent the slipping'of the wire while it is being wound, time is saved, in the winding operablocks.

necessary. y Where .-a number of coils employing the same size of "Wire are to ,p be wound, it is only necessary to turn the clamp screw of the Wire clamp so aste lcause fthe clamp lto grip the end ot' the wire' of the first coilfto be Wound Thereafter the ends ot the Wire tor the successive coils may be gripped by the cla-mp, without turning lthe clamp screw, by `merely pushing the wire into the recess between the jaw members.V

The yuse of the releasing lever .and its as`- sociated'il mechanism permits .the ready re-y moval of the completed coil from thefwin'ding Iblocks Without injuring the coil or its insulation.

Y As many changes could. be made in the above construe-tion and many apparently Widelyfdilferent embodiments' oi' thisinvention could be made lWithout departing Yfrom the scope thereof, it is intended t-liat'all.

matter contained in the above 'description yor shown in the laccompanying drawings shall be interpreted asillust'rati-ve and not in a limiting sense. v v

Vhat is claimed is:

1. A `coil-winding device comprising a winding bar, a Wire clamp associated with said 'winding bar `and arranged. to grip the end of thcl Wire to be1 Woundfa winding bleek carried by said Winding bar., vand operating means, said o peratingmeans causing the Winding bai` to Wind tliewvirc vupon the winding block.

.2.v A device vfor winding' Wire into coils comprising motive means, a Winding ;bar, a clamp associated with the Winding bar and arranged. Vto grip `the end Voli .the Wire to be wound, and a pair of Winding blocks mounted on said Winding bar, said Y\`vinding,bar be- K ing operated by thel motive means to cause the,v Wire to be .wound upon the Windingl 3. A device v.tor Winding Wire into coils comprising motivevmeans, a Winding bar, a clamp associated with the Winding bar and arranged to gripthe end of the Wire `to be Y Wound, a pair o'txvinding blocks mounted onsaid Winding bar, and guide .members mounted on said Winding blocks and adapted to guide lthe wire onto said vWinding blocks, said Winding b ar .being operated by the motive means to cause theivire to be Wound upon thewindingblocks. t

4. A device for Winding Wire into coils comprising motive means, a Winding'bar, a clamp associated with vthe Winding'bar and arranged to grip the end of' the Wire to be Wound` va pairof Winding blocks mounted on said Winding bar, and removable guide mem- 'bei's mounted on said Winding blocks and" adapted to guide the Wire onto said Winding blocks, said Winding bar being operated by 1 the motive means to cause the Wire to be Wound upon the Winding blocks, and said guide members 'belng removable to.. permit unlocking of theloclring Vmeans,fto permitVK the Wthdrlllng 0f the E@Ompleted coil from the Windingrblogks' y p ,y

6. device for Windingwire into coils comprising motive means, a w-inding bar, a clamp associated with the VWindingbar and arranged toV grip the end of the wire to be Wound, a pair of Winding blocks mounted on said Winding bar, and releasing means for moving one lof said'Winding'blocksi'vvith respect to the other vvindingfbloelr, 'said Winding bar being operated by'lthemotivv'e means to cause the vWire to .bevvoundupon the Winding blocks and thereby form alcoil 1 that 'may' be 'removed i lfrom V the @Winding blocks afteran operation of the vreleasing means. i f

7. A device for Winding wire'into coils comprising motivel means, a Winding bar, a clamp Vassociated with the winding bar and arranged to grip the end of the Wirel to'be .vound, Va pair of Winding blocks mounted on saidx Winding bar, a releasing lever' v`as sbciated with one of said Windlng blocks, and removable guide members mounted on said Winding blocks and adapted "to `guide tliekW-ire onto said -Winding blocks,` said Winding bar being operated byA the motive means to cause the Wire to bewound'upon the winding blocks and thereby form a"coi'rl that maybe Vwithdrawn from the winding blocks upon the removall of the guide members from the Winding blocks and theactuation of the releasing lever. i 1 Y 8. A device for Winding Wire into coils comprising motiveAv means, a Winding fbar, av clamp associated .with 'the Windingbar and arranged to grip the end of the wire to be Wound, a pair-of Winding blocks mounted onfsaid Winding bar, ak releasing `lever* asy soeiated Withrone of said 'winding blocks,

removable guide Washers' mounted on said Winding blocks and adapted vto guidethe Wire ontovsaid v'vinding-blocks,V means for locking the guide Washers on said Winding blocks,` and a releasinglever associated with one ToiV said Winding blocks, .said Winding bar being opera-tedlby the motive means to cause the Wire to be Wound upon the .winding blocks and thereby form a coil ,that may be Withdrawn fromwthe Windingblocks Inember, and a clamp attached to said revolvable member, said clamp 'comprising opposed jaw members for gripping the material to be wound, one of said jaw members being manually and automatically adjustable with respect to the other jaw member.

10. In a coil-Winding machine, a revolvable member, and a clamp attached to said revolvable membeil for gripping the material to be wound, said clamp comprising a body portion, a jaw member secured to said body portion, a bar adjustably carried by said body portion, and a jaw member pivotally mounted on said bar.

11. In a coil-Winding machine, a revolvable member, and a clamp attached to said revolvable member, said clamp comprising a body portion, a jaw member secured to said body portion, abar carried by said body portion, a second jaw member pivotally mounted on said bar, a Wedge cooperating with said bar, and means for moving said Wedge so as to cause the bar to move and effect the gripping of the 'material to be wound by the jaw members.

12. In a. coil-Winding machine, a re- Volvable member, a Winding block holder mounted on said revolvable member, a Wind-- ing block carried by said Winding block holder, said winding block comprising a Winding portion and a reduced end portion,

and a removable unit mounted on the reduced end portion, said lunit comprising a guide Washer and a lock-nut for locking the guide Washer on the reduced end portion.

13. In a coil-Winding` machine, a revolvable member, a clamp secured on said revolvable member, a movable Winding block holder mounted on said revolvable member, a member connecting said winding block holder to said clamp, means for moving said connecting member Withrespect to said clamp and thereby elect movement of Vthe Winding block holder, a Winding block carried by saidvvinding block holder, said Winding block comprising a Winding portion and a reduced end portion, and a removable unit mounted on the reduced `end portion, said unitcomprising a guide Washer and a lock unit for locking the guide Washer on the reduced end portion.

14. In a coil-winding machine, a Winding bar rotatable about a transverse axis, a pair of winding block holders mounted on said Winding bar on opvosite sides of said axis of rotation, means or preventing the Winding block holders from turning about the longitudinal axis `of the Winding bar,`means for locking the Winding block holders in adjusted position on the Winding bar, and means for permitting a limited movement of one of said Winding block holders with respect to the other.

In testimony whereof, I have signed my name to this specication.

AXEL W. BJORKMAN. -V 

